The EPA has announced it is denying a request to cancel all registrations for the herbicide 2,4-D.

The federal agency responsible for registering pesticides said it reviewed "all the available studies" and weighed public testimony in making its decision.

"Based on studies ... the agency concluded that the science behind our current ecological and worker risk assessments for 2,4-D is sound and there is no basis to change the registrations," the agency wrote in a press release.

In 2008, the Natural Resources Defense Council requested that EPA cancel all product registrations for 2,4-D.

The herbicide is found in approximately 600 products registered for agricultural residential, industrial and aquatic uses.